body{
    margin: 0;
    padding: 0;
    text-align: center;
}

#body{
    width:1200px;
    height: 800px;
    display: block;
    margin:0 auto;
    background-color: #5d5d71;
}

#left{
    position: absolute;
    width:250px;
    height:800px ;
    background-color: #dddddd;
}

#talk{
    width: 250px;
    height: 100px;
    margin-top: 150px;
    background-color: lemonchiffon;
}

#talk p{
    line-height: 100px;
    font-size: 30px;
}


#top{
    width: 950px;
    height: 150px;
    margin-left: 250px;
    background-color: burlywood;
}

#top_left{
    display: inline-block;
    width: 150px;
    height: 100px;
    float: left;
    line-height: 150px;
    font-size: 20px;
}

#top_right{
    display: inline-block;
    width:550px;
    height: 100px;
    margin-top:25px;
    margin-right:100px;
    float: right;
    background-color: #5d5d71;
}

ul{
    list-style-type: none;
    margin-top: 30px;
    float: left;
}

ul li{
    display: inline;
}

ul li input{
    background-color: #3389e2;
    padding:0;
    color: #555;
    display: inline-block;
    height: 38px;
    border: 1px solid #ccc;
    border-radius: 2px;
    width: 150px;
    line-height: 38px;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
    transition: all .3s;
}

.exit{
    background-color: #3389e2;
    padding:0;
    color: #555;
    display: inline-block;
    height: 36px;
    border: 1px solid #ccc;
    border-radius: 2px;
    width: 150px;
    line-height: 38px;
    font-size: 14px;
    text-align: center;
    cursor: pointer;
    transition: all .3s;
}

#center{
    width: 950px;
    height: 650px;
    margin-left: 250px;
    background-color: blanchedalmond;
    text-align: center;
    line-height: 200px;
}

